Precious Metals - Karat Unit of Fineness

Units of fineness - Karat. Calculate gold fineness conversions between karat, decimal, percentage, and o/oo (parts per thousand) measurements.

Calculator

Inputs

Results

Fraction--
Decimal--
Percentage-- %
Parts Per Thousand-- o/oo
KaratFractionDecimalPercentageo/oo (Parts per Thousand)Use Case
2424/241.00100%1000.00Pure gold - very soft, not recommended for jewelry
2222/240.91791.7%916.67Soft, not recommended for jewelry
1818/240.7575%750.00Recommended for fine jewelry
1414/240.58358.3%583.33Used in average jewelry
1212/240.5050%500.00Not acceptable in jewelry
1010/240.41741.7%416.67Lowest limit for 'real' gold products
88/240.33333.3%333.33Low fineness alloy